The Cinema 16-28mm T3.0 with Sony-E Mount is a wide-angle zoom lens that covers full-frame image sensors and features a Sony-E lens mount. The lens builds upon the optical performance of Tokina's 16-28mm f/2.8mm FX DSLR lens, but now has a parfocal design that allows you to maintain focus on your subject while zooming, and all-metal housing optimized for video and digital cinema use. The housing provides manual focus control with an easy-to-read distance scale, a de-clicked aperture ring for smooth iris pulls. The focus, aperture, and zoom rings all have standard 0.8 pitch gears for use with follow focus systems.